Mining extraction separator

Abstract

The invention discloses a mining extraction separator, and belongs to the technical field of coal mining devices, the mining extraction separator comprises a blowout prevention tank, the blowout prevention tank is obliquely arranged, the blowout prevention tank is used for collecting slime water and gas generated by drilling, a gas outlet is formed in the top, located at the high end, of the blowout prevention tank, and one side, located at the low end, of the blowout prevention tank is fixedly connected and communicated with a discharging pipe; the monitoring assembly is arranged on the blowout prevention tank, and the monitoring assembly is used for monitoring the gas concentration in the blowout prevention tank; the extraction assembly is communicated with the air outlet; the conveying assembly is communicated with the discharging pipe; and the baffle is rotationally connected with the top of the outer side of the discharging pipe, and the baffle shields the outer side of the discharging pipe in a natural state. Separation of gas and coal slime water can be achieved, online monitoring of gas concentration and automatic extraction are achieved, the opening angle of the baffle at the discharging port is adjusted in a self-adaptive mode according to the discharging amount of the coal slime water, the leakage situation of internal gas is reduced, and production safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mining devices, and particularly to a mine drainage and separation machine. Background Art

[0002] During coal mining operations underground, a large amount of coal slime water and gas are generated during the drilling process. When the gas concentration exceeds the standard, it is extremely easy to cause safety accidents if the gas is not drained in time. In the past, gas drainage mostly relied on manual regular inspections or simple gas detection equipment. Manual inspections cannot monitor the change of gas concentration in real time, and simple detection equipment cannot quickly and automatically start the drainage device when the methane concentration reaches a dangerous value, posing a serious threat to safety production.

[0003] In the past, the coal slime water discharged during the drilling process was often allowed to flow randomly on the ground, which not only seriously damaged the drilling construction environment but also brought great safety hazards. Manual treatment of coal slime water is not only inefficient, with high labor intensity for workers, but also difficult to meet the requirements of high-efficiency production in modern coal mines.

[0004] With the expansion of coal mine production scale and the improvement of environmental protection requirements, accurately measuring the coal content in coal slime water is of great significance for coal mine production management, cost control, and environmental protection. In the past, the volume method and the weight method were commonly used to measure coal slime water and coal water. The volume method calculates by measuring the volume of water and precipitated coal slime in a specific container, which is easily affected by the shape of the container and the bulk density of the material, resulting in poor accuracy; the weight method uses weighing equipment for measurement. For coal slime water with high water content, problems such as water evaporation and equipment corrosion during weighing will reduce the measurement accuracy. Therefore, a mine drainage and separation machine is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a mine drainage and separation machine, aiming to solve or improve at least one of the above technical problems.

[0006] To achieve the above purpose, the present invention provides the following solution: The present invention provides a mine drainage and separation machine, including:

[0007] A blowout prevention tank, the blowout prevention tank is inclined, the blowout prevention tank is used to collect coal slime water and gas generated by drilling, an air outlet is provided at the top of the high end of the blowout prevention tank, and a discharge pipe is fixedly connected and communicated with one side of the low end of the blowout prevention tank;

[0008] A monitoring component, the monitoring component is arranged on the blowout prevention tank, and the monitoring component is used to monitor the gas concentration in the blowout prevention tank;

[0009] A drainage component, the drainage component is communicated with the air outlet;

[0010] A conveying component, the conveying component is communicated with the discharge pipe;

[0011] A baffle plate, which is rotatably connected to the top outside of the discharge pipe. In the natural state, the baffle plate blocks the outside of the discharge pipe.

[0012] Preferably, the monitoring component includes a laser methane sensor fixedly connected to the top of the blowout preventer tank, and the detection end of the laser methane sensor extends into the blowout preventer tank.

[0013] Preferably, the extraction component includes a pneumatic butterfly valve fixedly connected to the gas outlet, and the pneumatic butterfly valve is connected to an air extraction pump through a negative pressure pipe.

[0014] Preferably, the conveying component includes a sludge tank arranged directly below the discharge pipe. A plunger pump is fixedly connected to the bottom of the side wall of the sludge tank, and the discharge end of the plunger pump conveys the coal slurry water to the feed end of the vibrating screen through a conveying pipe.

[0015] Preferably, a slantingly arranged screen is fixedly connected to the middle of the sludge tank, and the plunger pump is located below the screen.

[0016] Preferably, an electromagnetic flowmeter and a water density meter are connected to the discharge end of the plunger pump.

[0017] Preferably, the blowout preventer tank and the sludge tank are respectively fixedly connected to a walking crawler vehicle.

[0018] Preferably, a hydraulic system is also provided. The hydraulic system includes a motor, a gear pump and a diverter. The motor drives the gear pump to operate, and the oil supply of the gear pump is distributed to the plunger pump and the travel motor on the walking crawler vehicle through the diverter.

[0019] Preferably, a pneumatic control box is also provided. The laser methane sensor, the pneumatic butterfly valve and the air extraction pump are respectively electrically connected to the pneumatic control box.

[0020] The present invention discloses the following technical effects: The coal slime water and gas discharged during drilling are introduced into the blowout prevention tank. The inclined blowout prevention tank transports the coal slime water to the discharge pipe by gravity, while the gas accumulates above the blowout prevention tank, realizing the separation of coal slime water and gas; the coal slime water is discharged through the conveying assembly, facilitating the next solid-liquid separation; when the monitoring assembly monitors that the gas concentration in the blowout prevention tank reaches the set value, the gas extraction assembly starts to extract gas. Among them, the baffle is blocked outside the discharge pipe. When the coal slime water is discharged, it can push open the baffle by gravity and thrust, and the opening angle of the baffle is adaptively adjusted according to the discharge volume of the coal slime water, thereby reducing the leakage of internal gas; when the gas extraction assembly extracts gas and causes negative pressure in the blowout prevention tank, the baffle can be adsorbed at the discharge port under the action of negative pressure, preventing external air from entering the blowout prevention tank and improving the extraction effect. This application can realize the separation of gas and coal slime water, realize on-line monitoring and automatic extraction of gas concentration, and the opening angle of the baffle at the discharge port is adaptively adjusted according to the discharge volume of the coal slime water, reducing the leakage of internal gas, improving production safety, and realizing the calculation of the flowing parameters of the coal slime water, covering information such as the instantaneous flow rate and flow of the coal slime water, as well as the mass of dry coal and total coal contained in the coal slime water. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings forming a part of this application are used to provide a further understanding of this application. The schematic embodiments and descriptions thereof of this application are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0022] Figure 1 is an axonometric view of the present invention;

[0023] Figure 2 is a front view of the present invention;

[0024] Figure 3 is a schematic structural view of the baffle and the material shielding plate in Embodiment 2 of the present invention;

[0025] Figure 4 is an exploded view of the baffle and the discharge pipe in Embodiment 2 of the present invention;

[0026] Figure 5 is a schematic structural view of the sector chute and the material shielding plate in Embodiment 2 of the present invention.

[0027] In the figure: 1, blowout prevention tank; 2, gas outlet; 3, discharge pipe; 4, baffle; 5, laser methane sensor; 6, pneumatic butterfly valve; 7, sludge tank; 8, plunger pump; 9, electromagnetic flowmeter; 10, water density meter; 11, walking crawler vehicle; 12, material shielding plate; 13, sector chute. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0029] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Embodiment 1

[0031] Refer to Figures 1 - 2 , the present invention provides a mine drainage separator, including:

[0032] The blowout prevention tank 1 is inclined, and the blowout prevention tank 1 is used to collect the coal slime water and gas generated by the drilling. An air outlet 2 is opened at the top of the high end of the blowout prevention tank 1, and a discharge pipe 3 is fixedly connected and communicated with one side of the low end of the blowout prevention tank 1;

[0033] The monitoring component is arranged on the blowout prevention tank 1, and the monitoring component is used to monitor the gas concentration in the blowout prevention tank 1;

[0034] The extraction component is communicated with the air outlet 2;

[0035] The conveying component is communicated with the discharge pipe 3;

[0036] The baffle 4 is rotatably connected to the outer top of the discharge pipe 3. In the natural state, the baffle 4 blocks the outside of the discharge pipe 3.

[0037] The coal slime water and gas discharged from the drilling are introduced into the blowout prevention tank 1. The inclined blowout prevention tank 1 transports the coal slime water to the discharge pipe 3 by gravity, while the gas accumulates above the blowout prevention tank 1 to realize the separation of the coal slime water and gas; the coal slime water is discharged through the conveying component to facilitate the next solid-liquid separation; when the monitoring component monitors that the gas concentration in the blowout prevention tank 1 reaches the set value, the extraction component starts to extract the gas. Among them, the baffle 4 blocks the outside of the discharge pipe 3. When the coal slime water is discharged, it can flush open the baffle through the action of gravity and thrust, and the opening angle of the baffle 4 is adaptively adjusted according to the discharge amount of the coal slime water, thereby reducing the leakage of the internal gas; when the extraction component extracts the gas and causes the blowout prevention tank 1 to be in a negative pressure state, the baffle 4 can be adsorbed at the discharge pipe 3 under the action of the negative pressure to prevent the outside air from entering the blowout prevention tank and improve the extraction effect.

[0038] In some alternative embodiments, the monitoring component includes a laser methane sensor 5 fixedly connected to the top of the blowout prevention tank 1, and the detection end of the laser methane sensor 5 extends into the blowout prevention tank 1.

[0039] In some alternative embodiments, the extraction assembly includes a pneumatic butterfly valve 6 fixedly connected to the air outlet 2, and the pneumatic butterfly valve 6 is connected to the air extraction pump through a negative pressure pipe.

[0040] In some alternative embodiments, the conveying assembly includes a sludge tank 7 disposed directly below the discharge pipe 3. A plunger pump 8 is fixedly connected to the bottom of the side wall of the sludge tank 7, and the discharge end of the plunger pump 8 conveys the coal slurry water to the feed end of the vibrating screen through a conveying pipe.

[0041] In some alternative embodiments, a slanting screen is fixedly connected to the middle of the sludge tank 7, and the plunger pump 8 is located below the screen.

[0042] By providing the screen, large particles in the coal slurry water can be filtered out, reducing the risk of blockage of the plunger pump 8.

[0043] The plunger pump 8 is a plunger pump with a high-pressure S-tube valve driven by an electric motor. This machine system is reliable, has a low failure rate, and is convenient for maintenance. It is an ideal equipment for transporting coal slime and mortar. The main technical characteristics are as follows:

[0044] 1. The distribution valve in the plunger pump 8 adopts an advanced S-tube valve, which has good sealing performance, simple and reliable structure. The eye plate and wear ring are made of wear-resistant alloy, with good wear resistance, long service life, and convenient replacement. The wear ring adopts an automatic clearance compensation mechanism, and the hydraulic system is electrically controlled for commutation, with small commutation impact.

[0045] 2. The electrical system of the entire equipment adopts electrical components such as PLC and proximity switches, and the protection level can reach IP65. The control circuit is simple and the operation is reliable.

[0046] 3. The main seals adopt high-quality domestic seals, eliminating internal and external leakage of the hydraulic system.

[0047] 4. It is equipped with a manual lubrication system to improve the lubrication quality and extend the service life of the equipment.

[0048] The plunger pump 8 has the characteristics of stable operation, reliable work, low noise, adjustable pressure, small pressure fluctuation, light weight, simple installation, maintenance and operation, and long service life. It is mainly used for long-distance transportation of cement slurry, clean (sewage) water, coal slurry (or other suspensions).

[0049] Precautions for operating the plunger pump 8:

[0050] 1. Before formal pumping, the consistency of the coal slime should be checked first, and its concentration should not be greater than 40%. If the concentration is too high, the fluidity is poor, it is difficult for the pump to suck the material, and it is easy to block the pipe. Appropriate water should be added to the coal slime in front of the machine and stirred evenly before pumping.

[0051] 2. When there is more than half of coal sludge in the sludge tank 7, pumping can be carried out. During the pumping process, the feeding speed should be adjusted to keep the coal sludge above the center line, and try to avoid empty or empty pumping. At the same time, the coal sludge should not be too full, otherwise the coal sludge will overflow from the sewage tank.

[0052] Continuous pumping should be maintained as much as possible to avoid mud segregation in the pipeline. When the supply is insufficient or the discharge is limited, intermittent pumping should be used.

[0053] 3. During the pumping process, if the pumping pressure suddenly increases or the delivery pipeline vibrates, it indicates that the pipeline may be blocked. When pumping manually, send someone to use a wooden hammer to knock on the cone pipe, hose bend, pipeline near the outlet and other easily blocked parts to help clear the pipeline. If the pipeline still cannot be cleared after several consecutive attempts, the pumping should be stopped to eliminate the blockage.

[0054] 4. The oversized aggregates and foreign objects on the screen of the sludge box 7 should be removed in time.

[0055] In some optional embodiments, the discharge end of the plunger pump 8 is connected to an electromagnetic flowmeter 9 and a water density meter 10 .

[0056] The signals of the electromagnetic flowmeter 9 and the water density meter 10 are connected to the mining explosion-proof and intrinsically safe electromagnetic flowmeter through a specific signal conversion module. The flowmeter performs pre-processing such as amplification and filtering on the signals, and then transmits them to the control cabinet through a 485 signal with a standard communication protocol. The PLC in the control cabinet calculates the data according to the preset algorithm, and accurately displays the required information on the central control display screen through the configuration software.

[0057] By using a professional motherboard and based on a specific software algorithm, the information provided by the electromagnetic flowmeter 9 and the water density meter 10 is deeply analyzed and calculated, and then the key parameters such as instantaneous flow velocity, instantaneous flow rate, coal slime water density, dry coal content, and total coal quality are accurately displayed. These precise data provide detailed and reliable basis and data support for coal mine leaders to make production decisions and process judgments.

[0058] The electromagnetic flowmeter 9 and water density meter 10 adopt advanced measurement technology, have excellent accuracy and stability, and can obtain measurement data accurately for a long time in complex coal mine working conditions. In terms of installation, according to coal mine safety regulations and relevant installation specifications, there are no flow obstructions in their measuring pipes, no pressure loss, and low requirements for the installation of straight pipe sections, which can meet the installation requirements under different field conditions while ensuring that the measurement accuracy is not affected. After the installation and commissioning is completed and works normally, no daily maintenance is required, and it can be maintained for a long time without maintenance, which effectively reduces the operation and maintenance costs of the equipment and improves the automation level and reliability of coal mine production.

[0059] In some optional embodiments, the blowout preventer 1 and the sludge tank 7 are respectively fixed to the walking tracked vehicle 11 .

[0060] The walking crawler 11 facilitates the movement of the device. The walking crawler 11 is driven by a hydraulic walking motor and has a simple structure. The two motors are connected in parallel to achieve automatic power distribution and ensure that the driving force is not affected. The forward, backward and stop of the walking crawler 11 are controlled by two-way two-way reset manual reversing valves. A throttle valve is introduced between the manual reversing valve and the main valve block to adjust the travel speed. This achieves precise control of flow and pressure, and improves the operational flexibility and energy efficiency of the crawler.

[0061] In some optional embodiments, a hydraulic system is also provided, which includes an electric motor, a gear pump and a diverter. The electric motor drives the gear pump to operate, and the oil supply of the gear pump is distributed to the plunger pump 8 and the travel motor on the walking crawler vehicle 11 through the diverter.

[0062] A 22KW motor drives a gear pump. The oil supply of the gear pump is distributed to the travel motor on the crawler vehicle 11 and the plunger pump 8 motor through a diverter. The gear pump drives two dual-way reversing solenoid valves to control the coal slurry pumping system. A total system is divided into two independent subsystems. The advantage is that the mutual interference between the subsystems can be eliminated, and some hydraulic valves can be reduced, making the system simpler and easier to handle when a fault occurs.

[0063] In some optional embodiments, the electrical system uses an AC 50Hz, voltage 1140 / 660V mining explosion-proof and intrinsically safe electric control box to control a flameproof three-phase asynchronous motor for use underground in coal mines. The control method uses remote control. The electric control box has overload protection, overvoltage and other protection functions. The electric control box is installed on the walking crawler vehicle 11.

[0064] In some optional embodiments, a pneumatic control box is further provided, and the laser methane sensor 5, the pneumatic butterfly valve 6, and the air pump are electrically connected to the pneumatic control box respectively.

[0065] The laser methane sensor 5 sends a signal to the customized pneumatic control box. Once the laser methane sensor 5 detects that the methane concentration has reached a specific value, it will issue an alarm. At this time, the pneumatic control box drives the relay to operate, and the pneumatic butterfly valve 6 will automatically open, and the negative pressure pipe connected to it will immediately begin to extract gas; when the methane concentration drops to a safe value, the laser methane sensor 5 will release the alarm, the control box will control another relay to operate, and the pneumatic butterfly valve 6 will automatically close.

[0066] Working principle:

[0067] The coal slime water generated during drilling is collected in the blowout prevention tank 1. The inclined blowout prevention tank 1 transports the coal slime water to the sludge tank 7 by gravity. Subsequently, the plunger pump 8 sucks the coal slime water in the sludge tank 7 and transports it through a pipeline to a vibrating screen outside the drilling site for coal water separation.

[0068] Above the blowout prevention tank 1, a laser methane sensor 5 and a pneumatic butterfly valve 6 are installed. When the laser methane sensor 5 detects that the gas concentration reaches the set value, the pneumatic butterfly valve 6 automatically opens, and the negative pressure pipe starts to extract gas; after the concentration drops to the safe value, the pneumatic butterfly valve 6 automatically closes.

[0069] At the discharge end of the plunger pump 8, an electromagnetic flowmeter 9 and an on-line coal slag water density meter 10 are connected. Through the main board and software algorithm, data such as instantaneous flow rate, flow, coal water density, dry coal content, and total coal mass are calculated and displayed in real time, providing accurate basis for coal mine decision-making.

[0070] Embodiment 2

[0071] Refer to Figures 3 - 5 , the difference from Embodiment 1 is that on both sides of one end of the baffle 4 close to the discharge pipe 3, a material shielding plate 12 is fixedly connected respectively. The material shielding plate 12 is fan-shaped. On the side wall of the discharge pipe 3 opposite to the material shielding plate 12, a fan-shaped sliding groove 13 is opened. The material shielding plate 12 is slidably connected with the fan-shaped sliding groove 13. At the top of the baffle 4, a rotating shaft is fixedly connected, and the rotating shaft is rotatably connected with the top of the side of the discharge pipe 3 close to the baffle 4. The centers of the material shielding plate 12 and the fan-shaped sliding groove 13 are both located on the axis of the rotating shaft.

[0072] When the coal slime water acts on the baffle 4 by gravity and impact force, the baffle 4 rotates around the rotating shaft, thereby opening the discharge pipe 3 to facilitate the discharge of the coal slime water. At the same time, the material shielding plate 12 also rotates around the rotating shaft and thus slides in the fan-shaped sliding groove 13 to block both sides of the discharge pipe 3. The coal slime water is discharged from the discharge opening at the bottom formed by the baffle 4 and the two discharge pipes 3. This setting can reduce the gas discharge volume and improve production safety.

[0073] Among them, when the material shielding plate 12 completely enters the fan-shaped sliding groove 13, there is a gap between the top of the fan-shaped sliding groove 13 and the material shielding plate 12, so as to facilitate the subsequent sliding of the material shielding plate 12 without causing interference.

[0074] The discharge pipe 3 is a rectangular pipe, and its bottom is arc-shaped.

[0075] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0076] The embodiments described above are only descriptions of the preferred modes of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A mining extraction separator, characterized in that: include: A spray-proof tank (1), the spray-proof tank (1) is arranged at an angle, the spray-proof tank (1) is used to collect coal slurry and gas generated by drilling, a gas outlet (2) is provided at the top of the spray-proof tank (1) at the high end, and a discharge pipe (3) is fixedly connected to and communicated with one side of the spray-proof tank (1) at the low end; A monitoring component, the monitoring component being arranged on the spray can (1), and the monitoring component being used to monitor the gas concentration in the spray can (1); An extraction component, the extraction component is connected to the gas outlet (2); A conveying assembly, the conveying assembly being in communication with the discharge pipe (3); A baffle (4), wherein the baffle (4) is rotatably connected to the top of the outer side of the discharge pipe (3); in a natural state, the baffle (4) blocks the outer side of the discharge pipe (3).

2. The mining extraction separator according to claim 1, characterized in that: The monitoring component comprises a laser methane sensor (5) fixedly connected to the top of the spray can (1), and the detection end of the laser methane sensor (5) extends into the spray can (1).

3. The mining extraction separator according to claim 2, characterized in that: The extraction component comprises a pneumatic butterfly valve (6) fixedly connected to the gas outlet (2), and the pneumatic butterfly valve (6) is connected to the air extraction pump via a negative pressure pipe.

4. The mining extraction separator according to claim 1, characterized in that: The conveying assembly comprises a sludge box (7) arranged directly below the discharge pipe (3), a plunger pump (8) is fixedly connected to the bottom of the side wall of the sludge box (7), and the discharge end of the plunger pump (8) conveys the coal sludge water to the feed end of the vibrating screen through the conveying pipe.

5. The mining extraction separator according to claim 4, characterized in that: A tilted screen is fixedly connected to the middle of the sludge box (7), and the plunger pump (8) is located below the screen.

6. The mining extraction separator according to claim 4, characterized in that: The discharge end of the plunger pump (8) is connected to an electromagnetic flowmeter (9) and a water density meter (10).

7. The mining extraction separator according to claim 4, characterized in that: The anti-spray tank (1) and the sludge box (7) are respectively fixedly connected to the walking crawler vehicle (11).

8. The mining extraction separator according to claim 7, characterized in that: A hydraulic system is also provided, the hydraulic system comprising an electric motor, a gear pump and a flow divider, the electric motor drives the gear pump to operate, and the oil supply of the gear pump is distributed to the plunger pump (8) and the travel motor on the travel crawler vehicle (11) through the flow divider.

9. The mining extraction separator according to claim 3, characterized in that: A pneumatic control box is also provided, and the laser methane sensor (5), the pneumatic butterfly valve (6), and the air pump are electrically connected to the pneumatic control box respectively.

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